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There were at least two
telephone companies located in Pennsylvania between 1894 &
known as the
Co (approx. 1894-1898)
was located in Pittsburgh. Additionally, there is evidence
Keystone Electric Telephone Company
(approx. 1901-1905) operating from the same address as the
Keystone Telephone Co. Telephones and telephone parts
produced by various manufacturers with Keystone attributes
were utilized by Keystone from the Pittsburgh era. Some
related manufacturers most likely were Western Telephone
Construction, Manhattan Electric Supply, American Electric,
Northwestern Telephone Equipment Co. and Burns.
Keystone Telephone Company of
business beginning January 1902 until September 1945 and utilized telephones
manufactured by American Electric with attributes specific
to Keystone. These attributes seemed to vary depending on
the production year. There is speculation that all the
Keystone companies were in some way related.
Keystone #43 Philadelphia Type
c.1902-1910 - This stick was supposedly
produced specifically for Philadelphia service by Keystone. The
transmitter cup is marked with the Keystone logo on the top and
a serial number on the underside. From what I have found, it
appears all Keystone telephones were produced by American
Electric Company. This example is equipped with a rare
American Electric pony receiver, used at the turn of the
century on Keystone telephones. It appears in the 1900 catalog,
therefore likely appropriate for this model during early
production.....Besides, I like the look.
NOTE: Equipped with an American Electric
glass mouthpiece often referred to as a "propeller mouthpiece."
The adapter has threads that are tapered to fit various
Keystone #43 Philadelphia Type
|c. 1902-1910 - This is essentially the same stick as
above with the option of black finish rather than the nickel
plate. The option of the black finish was available only on
the 2 conductor model. The transmitter cup is marked
with the Keystone logo and a serial number on the underside although the
transmitter faceplate has no serial number and the shaft and
base are painted black. This example is equipped with the
early American Electric #25 receiver. Interestingly enough,
catalog pictures display the model #43 with this receiver
although many collectors display it with the later model
having the Keystone logo. NOTE: American Electric
Keystone Telephone Co. of Philadelphia
c.1903 - 1906
Burns Adjustable Telephone (or Burns Bracket Scissor Gate)
for use on Flat or Roll Top Desks was offered in the Central
Energy Telephone, American Electric Telephone Co. Bulletin
No. 20. Although the bulletin is not dated, it appears from
other documentation this phone was offered in 1903 - 1906,
possibly as early as 1902.
According to the bulletin, the
model with circuit #101 was produced specific for Keystone.
The model pictured here has
KEYSTONE TELEPHONE CO PHILADELPHIA PAT APLD. FOR stamped
into the transmitter backcup. On the scissor arm is stamped
AMELEC.TEL.CO. MANFRS. CHICAGO PAT.APLD.FOR.
The "American Beauty"
transmitter is unmarked and has no number tag.
Additionally, there are two
different perches used on both the #43 Philadelphia Type
(above) and this model. Equipped with an extremely rare
American Electric #26 brass bottomed receiver.
NOTE: This Adjustable Phone,
as well as the #26 and the #25 receivers are all displayed
in the same American Electric Bulletin. (The #25 receiver is
pictured on the manual phone below.)
Keystone Iron Box Telephone Sets
|c prior to 1906 - 1910+ Displayed are three variations of the "Iron Box" telephone produced for special, hotel, factory and residential use. I am unsure when production of this style phone was introduced, but there is a date of 1906 stamped on the condenser tag inside. All styles are extremely rare and some of my collection favorites.
In the American Electric Central Energy Catalog, this phone is identified as the #55 Iron Box, produced for the Keystone Telephone Co. of Phila. In the 1910 Keystone Co of Phila Catalog it is described as the #4 Iron Box Telephone Set. To my knowledge these were exclusively Keystone Philadelphia.
Models produced prior to 1906 used the American Elec "old bell" style #5 OST receiver. Likely from 1906 thru 1910, all Keystone telephones were equipped with the AE "new bell" style #25 inside terminal receiver. The later receiver with the raised Keystone/Philadelphia logo on the cap would come later.
Keystone Iron Box Telephone Set #1
This is likely the first model iron box manufactured. It is equipped with an American Beauty bevel edge transmitter including cup both mounted on the exterior. The Keystone logo and a serial #13568 are stamped into the outer cup edge.
On the right side of the box, there is a large Keystone shaped badge with the serial #10068 and Keystone logo as well as American Electric info. I consider this to be the earliest model due to the style mounting of Transmitter/cup and badge. The large badge was used early.
Keystone Iron Box Telephone Set #2
What I refer to as the second model was likely produced between the other examples displayed. I have no documentation supporting this, just the style transmitter mount and attributes. It is updated to accommodate the transmitter, yet eliminating the need for the mount and back cup protruding from the front of the box. There is an additional button, maybe for cutout, on the right side.
Keystone Iron Box Telephone Set #3
The third style is offered in both the American Electric & Keystone catalogs where they are shown with the earlier American Beauty transmitter.
Interestingly, this one was found with the later style transmitter (post 1910ish) having the Keystone logo stamped on the lower portion of the face, likely an upgrade at some point. It appears the back of the transmitter compartment was adapted to accommodate the later transmitter.